Accessory minerals of Ti,Nb,Ta and W as indicators of geochemical evolutions in magmatic rocks and related and hydroth. systems of the Bohem. Ma.


Grant No.:


Grant Agency:

Grant Agency of the Academy of Sciences of the CR (GAAVČR)

Resolved in:

2000 - 2002

Principal investigator:

Vladimír Šrein, Department engeneering geology and geofactors, IRSM AS CR, v.v.i.


Milan Novák, Moravian Museum, Department of Mineralogy and Petrography, Brno


Accessory minerals of Ti, Nb, Ta and W (rutile, columbite-tantalite, wolframite, titanite) have become valuable indicators of geochemical evolution in the terms Fe/Mn and Nb/Ta ratios particularly in magmatic rocks and in associated hydrothermal systems.The proposed project will be a contribution to understanding of compositional evolution, geochemical fractionation and enrichment of some economic elements (e.g., Nb, Ta, W) in the rocks such as leucocratic granites and associated rocks transitional between magmatic and hydrothermal stage, and hydrothermal veins, located particularly in the regions of Saxothuringicum, Moldanubian Zone and Bohemicum. Accessory minerals will also be utilized as indicators of subsequent hydrothermal overprint of the magmatic stage in some minerals and, moreover, as indicators of fluid activity (e.g., F, O2) in the parent rock.

ISVAV: (What is it?)

Project in The Research and Development and Innovation System of the Czech Republic (in Czech only)